PH26880A - Method and apparatus in performing hot chemical processes - Google Patents

Abstract

Method for melting or melt reducing chemical mixtures at temperatures which exceed the melting temperatures of highly-refractory linings. The method requires the steps of pressing the chemical mixture into bars and arranging the bars to form a cavern having a defined geometry. The cavern surrounds a centrally located high energy density radiation source. The portion of the bar facing the radiation source melts at a certain melting rate. The cavern geometry is maintained by radially advancing the bars toward the radiation source at the same rate as the melting rate.

Description

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METHOD AND APPARATUS IN PERFORMING

3 fad % HOT CHEMICAL PROCESSES ) * j bd . Lo N 5 T The argssnt MNVenTLI oN relatzs to & proc2ss and

Eta an apparatus for carrying owt hot chemical

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¥ 3 proCESSEY. in particular x smel:r and/or smelt x 3 : : : — So yy, 4 mr ie me oy peer fon I oF raductian of mivturss of foundry dusts Ores, And ‘ other smelt or andlor zmelt reducible materials

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¥ . -

Loosuch As Zi0a, Mg, Ti0=, TazDe or the correEsponoing ;ometals, =i working temperatures what sxosed the : ; 3 opeliing Leaperatnree vf Fireprood orick linings. : The copdaot of mot echemioal proUReses in

FEmoEr ZTE ANGERS hat mead he mel tang 15 . temperature Of HOOWD firsprootd brick linings ig not - = posziole wi nh prasently available DOCESRes,

CO opurtRermors. Looay 2 ueual smelting and smelting

Fedo an proczesss anhall a wersy high @nerdy

RB regu yr Emer and Have a conziderable environmental - ; 4 impact because of Lhe dust that je contained ia The i waste aases, LnsSofar As costly agditional gystems v 3 ¥ are not installed. Th addition. the prevention of 5 . . . . . . 5 foundry gusts that sre precipitated in large “ 3 CL. . : Ci . 3 quantitige alse creates considerable difficulties. 1 - oer : : 0 No-A5-21% 207 describes an attempt to schigve 2 > i : t capid smelting ang a rapid reaction between charging

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7 . . : - 1 5 ~ ved 3 : cupbstancs components In a DIAEY Surmanz with the -2 - BAD oR . . - : +> . » r tt Lo. . + i

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2 © + . § o . ~ x -k . . : . v ! introduction of electrical energy. in thai a plasma . 3 = : Jet ie formed bDetwesn a plasma burner arranged © rentrally within and passing through the aoper cover 3 . - : amen mr tmp y ime ap A . 7 mf the blast furnace and A counter-electrode that po

Yt passes through tHe base of the blast furnace, and 1n i

Yo that the charge material is arranged concentrically - * ahout the plasma 38, with a orotective wall of 5; solid charge substance particles being layered anto ® > . the inside wall of the furnace and the charging ¥ 2 : . a Le bu, yy pm, — n = — de , -m = Vp. . 13 t material going from the inner side of the protective wall imho the area of the plasma Jet,

However, this method does not permet deliberate : comtral of the plasma jet for snelting and ohemlcal y ~ 3 reaction of the wall that is formed, Coil mune . 1% 3 creme ALE On aT A izes furnaces of this kind cannot De : : prfectad, The washes gases Ghat are formed during

Co the smaction aust 2 exhausted through the olaet- : Frnacs Cr alEn and thim results i Further $ disadvantages 10 cannsciion with fhe condensation of 5 i . re 3 . Co =i} ’ exhaust gas Zar TITIES, z : i. ¥ The present invention aims to provide a Drocess : = = - =k yaes £& - dS gm —-y tf boy fom o- Ieee on] { ard an AAT ATE EO CAREY INnGg out pn chemical * i ’ Yu Co : DrOCESEESE, in particular smelting and/or zmelting 5 5 i reduction of aistures of foundry dusts, orag, and x ¥ cther ameltable or smeli-reducible materzals such ' t

A am. for smeampls, S510, Mg, Tila, Tals or the - - i} BAD ORIGINAL ss -

EN —

Ta vo

Ee . . 1 ok

Ea : iF > 1 . 30

ER

: ’ be . 4 A= «

Joe . . > } 3 porvesponding metals, with which the hot chemical

Popp ooEsses Can De carried out in temperzturs ranges

I

CD odmar are far in excess of the melting temperature of - os pe fo bee pe ie 3pm g ad Abe = + 4

A keen Filrenroot DrloH linings=. At the same Lime, > * . = 3 rot chemical rezcticns are to te relianly control led 3 ~ : iu im Je, ae . ry ime pt pn Lae od _ ye pes pm le oben 2 C = without the need to accezet shy restrictions of - & y Pemperaturs fry roazons Of Crocess technology. “

I Furbhhermore, a significant advantage, is to achieve { i x romsidesrable saving an energy and an ert Enel VE + . 10 {reduction in othe amount of dust that i= discharged

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Comitin the anliauslt gases.

Thess ohsectives have Desh mor Eved a he

CC mpmosss-taohnology spect of the praesent LredEntion

Soon Gamat in os oeocoes of the kind nescyribed in the

J

195 Toi nmtroducti on Erste the mistures of Ho ogEFimiiE - memposnihion than ares Lo be smelted and/or reduced : sre oressed into olocks witn oz defined COMDOEI LION, ” : which ars then arcangszd about a S0WroE mf radiation » ’ - oo — gre pm pr lp a my ES 2 ee am gn pm ow de mgm md very Rmioh energy density 20 as To TOrm 5 specie 4 * 0 5 CELE enmETrY ThE CERVETY aeomety nelng % ¥ : maintained by advancing the minhars nlocks radially : 3 s towsrds re rzntrally dizposed radiation Soatrce in ¢ bpmping with the course of the mgliing andar » * emeli-redustlion DrocReEs. £ ¥ 25.0 Thue, in the procsss according to the present

Foo irresrinl an, tie midburs that iz pressed into blocks * ¢ . - . BAD - ; .

< . 3 - . x . ta " .

A» . b : £ : . i - 7s = * : : fsimultanesusly Forms the rescticn medium and the = . hedick liming? of the metalivrgical reaction > . LL vessel Denending on the melting rates, the blocks bare so advanced thal the cavity geometry about the z 5 repurcsr of wardl ation, for example & plasma J8t, 15 i £ . I TT - Fay oe - 4 ba - yo 4 4 yp i — pen fg npg mm

YT heph CCRETANT. fo hhis end, the mixtures blocks ares i tpwmven Forward radially towards the centrally : : 3 3 : = PE I Pa od da Ae em oer vm apm gem - oF e ae gr.

Codi amosed sours 07 ~adiation at the sang rate as 2 . . . .

Lhhe smelting anc or spel t-reduchticn procisss 1s <

Staking olace. Suitablz mesne are used to keep the , tl Azina Jet within The cavity. and these A352

Cpuplainsd in prester getall oelow.

TE im preferred hheb conveyor wl aments De used ; mo as to ensures precise movement of the miaturs 1% Clocks to the energy SOurds. The woriing substance phat has been converted into block form is bash . chy dgay ir owiion ConnsEchionh A specific dimensional , Coacmuracy and cold oomprassibility. = . # When te mroness according to the aresEnt +

SE ; invention iE wed tioooprevent foundry dusts, It ols ¥ : , = ~ re ve mg 1 bh ~ Lo - — - oo advantageous to procesd in he following manner : Wher , se an exanple, one can proceed from the ¥ : 1 substances set out in the following table: “i [py A 3 FS - filter dust * KR - ei voy-Rog tacidic ore dust) : no - flue dust : 3 = cote san fram coke dust CFllter dus) ¥ pa = —

J

€ "amet . . . - .

a . -“ . ~ ! a i _ wn - - . g 3 :

Ce

Cv * - 7 . : . TABLE I : AMALYSIS OF CHARGE MATERIALS = oJ =- -+ i me ees

Co] FS KR 6S Ks - i = ta od - I —- a Tw : | Fe 125,80 1 50,35 27,40 | F1,70

N > pu bey ime - { 10; Fell boa, an | - PS, 18 - z - “yd ; 0 go dT } I rer * Fea | 57. tis | {71 5 2} : JA 8. 47) | 4%, 33 ; ) % \ Mn i 1 5 JE i 0 a 0g i Oy ET | - - : { Cm | po. i is omy my : : l 5104 V1, EE | ta, TY i g.08 | 21,200 ; Poa a Dal Ta ol Tosa comm bam oro . 3 i “1 alos { Se altel { ty OF { dog Te { Eg oA i v ~~ Vim oom - - i me { > + | Cal Pim, a0 1 0,13 £037 17,07 > i - —~rrT 4 - —- —-r Loo J a | Higtd } 1 aS = i Ldn aim ! 1 a Fo i iy a7 ¥ + yd My men i Sy EE oo err . ! = ! Bg tidy ha tN | 3, 1a) ! ha La : - HL Tr Ca. co oam a - | = : Ynys i eS be A i hg el} i = - bo yo - oy 0

A Loo,=a | 0,001 | 0,019 | - 0 i in I =, 8 0.0017 OGO0ESL 0D, 01a p- { i ~ N oe CTD AE i = { - i - ! wr gd i { Te 5 10 bom bo ! - ; oan - : i haotad | : { dog HA | : ’ ye - i —- ! OLD - i i ‘ { SH ! ! 280 Ti0x one | —- ! Ot Po, da ; 25: i 10a 5. - ! - bona 0 Po - D.1E bo, as ! : - PL i ~ } mem PE 5 HOP : i : 0,29 | 0,94 i - an Dome am) 4 w= | = oem : i Feuchte oa ASS | [aT - : 3 . i ! a Ay —- T= ! a Fp ! hr ! : . i Gluhrveriast Sod 0 WL 5Y pan, Ar 1.83 — Vom : ! i { ey

SA Looe ; - ; = | : Li ! ;

SUS SEUSS SUNS SSG SO

; Miwturs proportions of the foundry dust, S-wt ol :

Ty =e = =

N =a Lat a DY : HR 25.5 ¥ mee re - : 1200 PEC PE z WE 3,5 40 3 ——————— mmm mee § TOTAL: THY, OU ‘ (OL A vn ht Gn dt TLS Wr am it " 3 3 . ~ . . . : The mat@cials set oul an fable 1 oars best well 3 . oo = eo Co as 3 mixed with approximately Fh-wh water, pressed into . : locks of a2 suitanie sizes, and them aried. The mh BAD ORIGINAL s rin i .

Ha = or i . + -r . . Lela pe i , oried “blocks are arranged radially about a central

Loradiation source, wiih conveyor zlements that will ensures precise feeding of thes mixture blocks: when . this is done, a cavity with a definite geametry is a - to be formed around this source of radiation 3 radiation, for example, a plasma jet. According to 3 : iy , oo : ! an advantageous embodiment of the present invention, : E i fre @lasms det can be forged 38 described in AT-FS x y AT&E TOR. Gftmr ignition of the plasma jet, whi oh ~ - . - t appears at a graghite electrode, by means of argon, . mydrocarbons andsor finely dispersed graphite area - antroduced into the plasma det with Lhe srgon.

The carbon graphite) ils converbsd ho the gas nhaseg fry the high plasma TEmDEr ature, ang the reduction 13 To process iz accslsrated by ranisation of tie : Pryde mo aTon gas. Funpzequenily, the burning of the . graphite electrodes 1F largely retarded by the : mighly lonissd SyUvocarionogas atmosphere, nce the "* . ’ plasms get has Deen ignited hetween the slecirodes,

YL tne mixtures nlocks that form a cavity around the ’ plasma Jet begin to melt. As they melt, they are tr . : advanced-—from the outside—-—-at the same rite AS 3 . * 4 © hey ars melting, 50 that the geometry of the cavity i * remains constant. The not chemical resction of ;

A . . . direct reduction takes places st the same Lime as the + melting. : r - 7 - BAD ORIGINAL >

Eh .

Fe

RS - © - = . £ x . r ] ® Na . : > : : CLs oe vs < ‘Since, in this case, this reaction takes place + amasrobically Cuntar Lufhabschivss—--Tr. 2, at the

X . “phigh temperature that exist, crly carbon monoxide

Land stean ars generated in addition to the argon as 3 ‘plasma gas. This gas can be passed to an energy jrecycling feysbanl using bricwn technology. + 3 : ; The teavy metal fractions that are i -

Ccamtained 10 the charges material wvapourise in the y process that takes place and can to oa large extent

Le = concen ed ha & gas—exiractor Cod [Basebzugshaunbel or Ln condensor elements bulli into a gas-estracior prope.

Tle oe, To mr od ve eT py za a= Lip 2 sy Fina =

The Laud 17a Liat i= Tre Lh Lil = . Rrooess can be Tapped oft continuowsliy, and the slag iE removed ocorhinuously in Lhe Same Way. - The process ascomrding oo the present iment on

Cie atmo osepitasbles for preventing sludges that are

Lopmed Ln nhs morES of Lron-ors extradhion, for # amp E. he slusge formed in the Stelermark, sofustrl as. The +ollicwming taples © shows Lhe aver age x 4 valums abtalnsd from the analysis of sludge from : ! roirogn ore. i : t As is shown by Table Z. the composition of this 3 f sludge constiitutas an automatic burden. After the i

Toaddition of carhon acooroing to the stochiomstric s . . . remands, rivie charges material can be pressed into * - -— 3 —_— r

BAD ORIGINAL

: . — .

- 3?

Lar ~ or

E30 . 3 - es .

F . 2 -

LC ££ - wi 4 Lo - Ade - - 5 . i i . ‘zuitakle blocks and he used in the above described

IRrGURsEE of zmelit reduction according to the present

SAnvventi on, 04 great importance for the course of

Stree process according re bhe present invention 1S = . = he suitable configuration and maintenance of the ' r CL . ‘cavity geometry during the overall conduct of the ¥ - * -

SorpCEsE. 5 . 14 : TARLE 2 5 . x ANALYSIS OF IRON ORE SLUDGEX % im A

Fed 1a, 5 em it. a0, T mise [AT : Glukver lust (DDo+HDD geld) Thad - oi Lem aT . ~ AED Lal ad : Call : : 12,3 . 1 = Th = a a : Mo IE : Sl 0,2 : Fon lm 0,14

IE : Mr 1,8 : Geaim sizes of solids in the + Yim kEner overflows oo 100 am » .

TO . § Sverage analysis . $

Y 511 kinds of metallic ores can he reduced Oy 3 * ; hot-chemical methods using the aoove principles. oon Fhe mame way, all amelting processes that are y

Rie Tocarried out at very nigh temperatures Can he * -~ . . conducted using the methods according to the prasent

Co drpvention. OF particular interest ie the processing —_— Q —

GINAL

* BAD ORI! ; th ha i & . 4 oe 1. . * = . — . 3 8 .

Sof 4ilter dusts and slan reeidues from combustion ¥ planta, FUE RS, for examncle, garbage incinerators, ’ + . - a pe ee, cg] Wr {everps 4 —- PE : I~ mn tp wii cl can be so melted dows that vapourising heavy

J metals can be recoved by martial condensation, amd * i . . Co any remaining trace =lements can be bound into the 5 . t plass—ceramic and product, from which they cannot : 2 leamch out. : fa particularly interesting application is the . 3 rn OCBEE, accmrding to the prssent invention, for the . ; 1 Airesct reduction of bauxite to metallic Aluminum.

To Te this end, finely ground sDauxite iz well mi stead with CE according to the ZOOL OmETr Lo mamma rEaents and then pressed Lito zit table - .

Domloobs as descriged heresiofors, deisd, and the moved 4 Ce bee mare ad hat hd ed 3 » To RE sonar OE oF rad STI on =n Lite Tt = defile cavity geomsicy cesalis ang i= maintained in the

Cr gorse of the further resction. Afher igrttion of - the olasma dsb, Phe maddite mixnturs oneltE at the .

Lo mur FADE, when the iron oxide is first reduced and is wn * collected in oa trap for oan iron sume that is © zatwrated with alumimam ano snriches with carbon. . The aluminum oxide first occurs as & fused MAES 4 -~ . * t [Sehmelzfluss] famelt mullite [Schmelzmallitld) and te

Jd I . - . fy = converted to &luminum carbide {Al oCx) by the use of a5 ¢ eutra energy at temper atures of FEODOOC, as in 2 : Slals + F000 ——x Alals + 20H mainly of ALF" and O°~ 2

TT r GINAL * , *

i - - : whe . ad . % Lo

J*

E i ¥ . £

FE

3

TE ° w : - tL . .

Fons heat of formation AH = =49.7 kcal/mol).

Pd fpuring slow cocling from 1300OC to approzimately i v .. co i 4 “+ :

LAG0PC the Alats hreaks ocown to metallic aluminum ® #and carbon in the form of graphite. as in Alals ——F 3 ba a pl + IE. Corvereion of the carbide with Al 20= can & > 1, i 1 — FE Am be pm . - . yY ~ = also rake place, as in the reaction AlaCs + 8120s —— » Pa Al + 3 C0. 3 . , a . { Tt ie advantageous to adopt the Following : procedure In mrder to achieve complete conversion ot < 10 the existing Alls or emelt mullite: ‘ The Sle. that ooours initially as fussed mass

CC oyampelt mullite) is driven under the action of the met gases that are formed (COH) im the

Co direction of a washer [Lagutergefasss] with the 15 formation of aluminum carbide and its subsesouent di spenporty onation, Remalniiig, unconverted Alzlz . emmlt La eshtwrnsd ho the rEacnion none im order Lo - achive oomElets CONVErsion. in the ars of the ‘ washer, metaliic aluminum with x maximum carbon 1 ; _ ms \ , - 0) Co opontent oF O05 n wt, A silioon Ccortent oT approximately 17. a titanium corntant nF

To appronimately 1%. and additional impuritigs with = : } iron amounting to At most 1.83% iz tapped off. Iron, 3 caturatsg with alumipum and srriched with carbon, 18 5 * drawn off continually from the trap that os located memmeath the rEaclion Tone. . - 11 - BA Pe -

Tw re

Cz ” u . . + co . st } }

EN - - -

Ce -

Tr i ie . 2 .

Tr - - Rd v . . fe discussed above, in the process according to the praesent invention the plasma jet is kept within + : thie cavity. In order to he able to exploit the high ro nC ob paren ze 4 d= of - eg 2 = oo 3 fz = Be pm x Energy densi EY caf the plasma Jet bo the 3 oF :

F fullest possible extent, 11 would be necessary to : control the slasma Jet precisely within the defined ~ i # ® vi. in addition, in order to optimize the smelt

A

3 | i : « do os. eyo ge pm dem ia — pe de ea pe

J ang weductiorn procgeses 1h LE sssential Lo meirtasin i ThE NECESSArY BENETrgy. 1.2. , smelt snttialoy and 5 19 Voreduction enthalpy as precisely as oossible to carry . cut hhe hoh-chemical orocsesesss and to match the pesification snthalpy of the graphite in The polasing ’ det bootie hotal ensrgy that ls supnliszd tao the nlazma Jet in an optimal manner. This can only be - 13 Po odone to oan inadeguats degree by using conventional ’ nlasma Jeh technology. This conventional technol ogy . mr ovides for the fact that os plaema Jet 1s formed : hetween hee electrodes, a head and a base 2lecirods, - i ands ow hetwesrn & ead and two or three side 2 5 zlectrodes. Howe er , thiz rlasma Jet Can then 34 3 ; 3 z trea mut oa cavity on one side within the i . . ) i}

ES TLFMaCE, ER atng=1 it Cannot be guided ano i . 5 1 7 apd x controlled.

Re ® . . . Cl

A further advantageous Configuration of the nd | 1 + = rm en ym Forrest - = ah > process according Lo the present invention permis : Ty i melt ley oF Iolmpm ope cs Yo sed rdees mez es mpd Anon he mptuicr en Of COE DMNTOnL 2m Ar ezsea EERE MATS + -_ YD - - , . p ORIGINAL

BA Cm

“- hy o& more precles maintenant: Df Une Bnergy 3mpat

Land comtrel of the plazma et winnio the defined

CAVITY si trac nthe olazma set ote rgniiten belween -- —- de ager pay od oa te be pm mee om mm man dee —,, - = gen gens vs

Lie man @leonrous, the mead slzotrode and A = t eV a ees PR = doa al = — oa me J o- Ar EY rem ge we od

Splurslity of CEO a electrodes {x to bl arranged . FN > boy sem ime em en he fe te fm ——ren pep Aeon - 1 immediately Dearest Lie cavi hv. The racial : k 3 i pm mr foe, er np = baa roy pm =, ES wo] - — yy be SR

Co @lectroodes FEE = rama oad spmlied bo thE mdar | nreye isha coniool dn order Lo pani aa the gas atmoeptarg, wher EEE Te mart loa LE Eo piel baied bons de bm cb ter owl nr Comair tives moe smesnt debe md a

Lh o LY COE TOT IRL Lng Winer moe Lament Ls EA irmtalleo on the leading sdge OF The conveyor systen rat thE omsloino ratzm own inis Lhe sor Taow wl bv caw hy ars sresnred. i“ fun Er SOC EMT ADSOLE SDD aEnit Tor esses 1% that the mewl to omzuaraal that 1s ocaoonm rn the van sae weo@ElwE an Afdinional mEvmEts LTILL fom Lhe . radi al mlm LEE IT DUG tree base wed mony ois, i . r. © pm ve mn gm wm gm pen VY - - tae a de he Tim mgs me pes gen ae pe — - - :

Wit 0 com cmp TEs oy Date Emer aur Em GEASS Ensen, - in order DNAat Fle math romoeratare oan be hens ai COPEL ANY

SBoooerdilng Tor another ABET cies present

Cention cmlabss to oa SroossE for caerying aun 1 a er pee ey mm a ee mes mor me 4 lam mm pd RE. ln ou re, Gey eum me pd eh me pe

Fin GrLOEEE CEEOL OED 1m The oh och Tod a

PEs iim melng characterized mainly By a a carne ally srrannaed cavity wiih oa definite geometry, wi oh Lom mame fen mlonuws or oducsd Lam ive ' NAL a= ORIG = BAD pa

J

- - $ miature that 1g Lo ke zmelied angsor soelt reduces hy preferably madially arranged conveyor elemantz ho mes fre misturs blocks bo the centres: Dy oa bap that ie ardanged DeEngaith he mavi hy, with tap oontE . = for the metal smell and the liguid slag: by oa carr al @lacoroads system; wy oa cows khan is

Arvanged above she ooavihve by R mame hr aohor

Tommel oy oano by oa gas-ssiraohor pipe. } The desing sopsnded herailo Shows mE EN LAY

S emiiodiments of the present invention. Foor i abems a cross-section through an ernodiment of the anmar anus BODOE ORT tom Lhe present DUCED or wii lat figure Doi A Alan visw of This AoUas 5NE.

Siepupams Oana 4 BNO 3 OFOERCRSCLLON ari oA Than

LE WE FespEenn rely aT 5 Aurther apnaratus socordino wo the grssent Cevearmntofr, hia E being marhioalarly . iti Cans ry foam dlr Ron CEOILT TL oF zt Ue,

Fiore I aimeas op FurTiner Eire dma of rE ; 3 apparatus aofording Too 1 Ne mresant Invenio an A diagrammetas BERZLIN, 10 DEILG pozsiols Lo maintain bun snergy iopui preclasly and conhrol the olazms det within the defined TAaVILY.

Tr iE ar an LE, ie maYi TL Wy 1 TE ’ £m peu The omiwTure what Te oho be zoel ted andlor aE seme § FETED, Friis melng +2 im Wlock FT mamta boy Drea OE Semin the outs dE. The sadtally - 14 - v

GINAL

AD ORI

B ee a mi ’ .

arranged conveyor slasments: I ensure the precise infeed of the miators placss towards bhe centres,

Within TE tran Do oheheatn the cavity 1 thers are zi suiteinles locations, the Tag points for Lhe metal

Camelt oand for the liouid zlaa. The upper electrode

Cova puambEr Ed G3 tne Loker elacirode 10 iz arranged at he haze of tne tran I The Cover of the resction

Enel iE cumered Tr 20 snd Tare the gas- gh acho Coed Ar tie Oag-enitr ROLor Dine,

Lis respectively. Tier connecting channels ars numnber ed

Zand 7, Ir Figures S, he woper or head slectrode 4 that wutenags nto Lhe Taw ny boheme meQuil rosa dass ] and gas soups ly Lips: and oan pe moved ina vertical givmotion by oarriage or the like, Immedi shel y

LE nenesth the Cavin Lo bhers 1: oa sluralioy of raps sl wlaectrades ta ho 00 noan TEN De oaovas radially back smd For ang Can prederac. so De roasted abowh bree

SAL ay rm ROELILE, Aomass alec ads 10 CAV Les - arranged wrth The trap 3ozeneath the cavity, a Hy ocaryylog oul whe oro IDEss acooroliogg bo thie sresant invention Ln ie fossible Lo convert the auide copponsnts of the manituwre divsctly into fumes mani and complete Rhee reduction to metal irom the liauld ghase. The advantages of thie technology Liss in the fact that, for axamples, the

Faolk ost be redoeosl dios=oo_ yy Through the fuses mass - 135 - r \ {NAL

ORIG .

BAD

.

~ a

Famil= +o Fz, and need nob bz reduced ohrougn Fesla ard Fell to Fs, io which sonpechion iE ors oomsible to Ee ol mi fhe osarsisnoce of A favourable miaturs

AD mE Leon SocuweE bn pure form without = tapari ties sus & carbon, Silicon, MAMQANESE

HTS CHE ard so on. and iE in eguitiibriam with

Tiguad Foals {oes ULI mann: Enoyhlopsedis der

Tamim semen Ghenis, 4th oed., wale 10; pe EI40.

EEL BENE he AE - @hD oro oh - 16 - _— o

Claims (1)

1. - ~~ 26880 . 3 CLAIMS i. fea mebhod For Carrying aut not chemical NrOCESERE, to omartionlar = melting angsor melting roduc ion of miatures momar LEing Foundry gusts, es = and other meliing and/or melt-reducible, such BE,

   gL... Filan. Mog, Tilo, Tala or the corresponding - mmt al Se Pre Lanne avemnant wich consists of CEs ER Sebo Dogs LE gators which is to ne med ted andSor motu ed ae whi al pa omt geftined composition to £m 1d ard maintain A defined cavern gone, afoat an mone ome i ats soos of radiation of migh snesrgy Gem miooy sre mow annIng NE Lars of matures mad aL Ly . against a corte ally aryangsc BouToE of radiation Lo Glia dear Es LE raz omet hang And or melt ing-reduoil on 13 CECE SEEE er REEGE, Ee a method scoordine Lo clatm Uo wmiErelnn A plasma SE LE ems as morose of madi ation of Diab ” mer gy SEMEL. Ta So mets zooording To claim 2 wher=ln SL aftmr Lhe ignition mEang m4 aracn gas of & plasgos Get, which originates fein a araphibs, glacty ode, Prod SC ET EENS spadsor Froely dispenred graphite jE imbroduced with this gas.

   £4. 58 method accorgicg Lo claim 1 wner=1n guide gl eqpents Are arranges Tor he CEC BE SodmSTT OL TIO sn MIE DATE mE ns LTE - 17 - ORIGINA- BRO oe Gr apmarsius for carrying out hot-cheml coal ar noEsE, comprising a centrally-aresanged cavern of defined opomehry forasd oy bars of meliing and/or mEl bt -regucible mixture, sreferably radial ly-amranged bi guide esleamentzs tor advancing the hars of mixtures Tomar ds Lhe cenire, a2 collecting bazin which is 1

   Lrvanged below tne cavern snd which ie provided with mutiets foe hhe metal melt and the liguid slag. a caEntral mlectrode scrangsment, a COVErIng arranged sowie the cavern, a gas hood ands gas-vent Dupe civ iden thereat,

   Eo ap mgnrenUe eaocoording to claim Do wherszin at lager ome adomitionsl collecting basin belong prodded mErving S50 Tlarsfication none, BELO ASL

   13 iE In Sed SAS witty & collecting basin provided bad oow he osvers or wih gather collating hazing via : COnmEntiog DARTaEE. . : oi {Sgo.y WILHELM STADLEAUER aE ERWIN KOCH FRANZ ZAUNER RUDCLF RINESCH . WOLFGANG VYANOVSEK Inventors NAL RG - 18 - Bho ox - - -